Electrothermostatic temperature-controller.



B. F. TEAL.

ELEGTROTHERMOSTATIG TEMPERATURE CONTROLLER.

APPLICATION FILED JULY 30, 1910.

Patented Nov. 26, 1912.

3 SHEETS'SHEET 1.

III/III! ATTORNEYS B. F. TEAL.

ELEGTROTHEBMOSTAT IG TEMPERATURE CONTROLLER.

APPLICATION FILED JULY 30, 1910.

1 045,,68. Patented Nov. 26, 1912.

3 SHEETSSHEET 2.

WITNESSES IN 'ENTQR' MWRNEYS B. F. 'TEAL.

ELEGTROTHEBMOSTATIC TEMPERATURE CONTROLLER.

APPLICATION FILED JULY 30, 1910.

LM53D Patented Nov. 25, 1912.

.3 SHEETS-SHEET 3.

WITNESSES I VENTOR it will be understood that the same is equallysirnrns earner FFlQE.

M BENJAEIN ll. TEAED, F @LENSIDE, IPENNSYLVANIA. ELEGTEOTHERMQSTATICTEMPERATUBE-CGNTROLLER.

L4t5 fi3 Specification of Letters Patent. Patentgfl Nqyy, 26 1912Application filed July 30, 1910. Serial No. 574,707.

To all whom it may concern: In the drawings I have shown a construc- Beit known that l, BENJAMIN F. TEAL, a tion for carrying outmy invention,which 1 citizen of the United States, residing at have found operatessuccessfully in practice, Glenside, county of Montgomery, State of butit will be evident that the arrangement so Pennsylvania, have invented anew and useof the parts and application of the same may fulElectrothermostatic Temperature-Con be varied, other instrumentalitiesmay be troller, of which the following is a specifiemployed, and changesmay be made in the cation. construction, which will come within the Myinvention relates to that class of mechscope of my invention, and I donot, thereanism by means of which an automatic regufore, desire to belimited, in every instance, lation of temperature is obtained, and itconto the exact form as herein shown and desists of means for indicatingthe position of scribed, since the same is one form of illusthe controlof the temperature generator, trating the s irit of my invention, and 1whether the same is for producing heat or therefore desire to make suchchanges as cold. While such a device is capable of a maybe necessary.large range of applications in the regulation Figure 1 represents anelevation of a form or control of heat and cold, the particular ofcontroller which may beemployed, showform, hereinafter shown anddescribed, is mg my invention app ied thereto. Fig. 2 for regulatingtemperature for heating of represents a side elevation thereof. Fig. 3buildings by any suitable means, although represents a perspective viewof a controller.

' Figs. t and 5 represent sectional views of portions of the device indetached position. Fig. 8 represents a diagrammatic view on an enlargedscale showing the electrical cirso cults. Fig. 7 represents adiagrammatic View showing the relation of the circuits, a source ofelectro-motive force, and the cir cuit controllers. Fig. 8 represents adiagrammatic viewshowing the generator and connections.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings, 1 designates a controller of any suitableconstruction, in the present instance, being provided with athermostatic element 2, pivotally mounte at 3 and, one end of which ismovable between, and is adapted to contact with, one or the other of thetwo contact points 4 and 5, suitably mounted upon the controller 1.

6 designates, in the present instance, lates provided with notationsthereon to in icate the degree of temperature desired; and

the controller and to electrically actuate designates a hand or pointerwhich is adapted to be manually operated, and in order to said indicatorby the part called the motor which is the means by which the draftadjust the controller to the oint at which dampers are operated. it isdesired that the contro ler operate, it From the above it will beunderstood that being understood that all necessary parts are I haveprovided a temperature generator included in order to make an operativedewith means for increasing or decreasing the vice.

action thereof, and l have provided means, 8 designates a binding post,carried by the operated by a desired temperature, for concontroller,which is in suitable connection trolling said increasing and decreasingwith the contact point 4, and 9 designates a means; and I furtherprovide an indicator, binding post which is in suitable connection nosuitably connected, to indicate the positions with the contact point 5.

of said increasing or decreasing means. 10 designates a motor, which itwill be applicable for temperature generators 0 any style. The ordinaryforms of apparatus, for this purpose, control the increase an decreaseof temperature by opening and closing the furnace draft dampers, and itis highly iinportant, as regards both safety and economy, that theposition of said dampers be shown, at or near, the controlling device orother desired location.

In my application for United States Letters Patent, filed July 22nd,1910, Serial No. 573,163, I have shown and described a system ofautomatic temperature regulation; and the-object of my invention, asherein set forth, is to provide a means whereby the osition of thetemperature regulatin mec anism be shown in an absolutely relia lemanner, at any desired oint of observation.

Another object of my invention 15 to provide such means of indication inthat part of system described in my hereinbefore mentioned application,which is therein name tery of the motor,

understood, is suitably situated with respect to the temperaturegenerator, such as a furnace, and which is of any suitable-or desiredconstruction, in the present instance, being provided with a lever 11 insuitable. connection with the operative parts of the motor, one end ofwhich lever connected with one of the dampers of thetemper'aturegenerator, saythe air admission damper, by means of a connection-12,while the opposite endof the lever, is suitably connected with a checkdraft' damper of. the temperature generator, by a connection "13, saidconnections being secured upon the opposite sides of the pivotal pointof the said-lever.

14 designates a binding post, which is in suitable connectionwith theoperative parts of the motor, in order that, when the circuit thereof isclosed, the motor will be actuated to close the drafts.

15 designates a binding post which ls'ln suitable connection with thebattery of the motor; and 16 designates a binding post which is insuitable connection with the operative parts of the motor 10 in orderthat, when the circuit thereof is closed, the motor will be actuated toopen the drafts.

17 designates a conductor, which is in suitable connection with thebinding post 16 of the motor 10 and with the binding post 9 of thecontroller 1, whereby it willbe understood that the contact point 5 ishere shown as being in the circuit in which the drafts will be openedwhen the thermostatic element 2 contacts therewith, to close thecircuit.

18 designates a conductor which is in suitable connection with thebattery binding post 15 of the motor and with a binding post 19 which issuitably supported by the controller 1, whereby said binding post 19will be suitably connected with the battery of the motor.

2O designates a conductor, in suitable connection with the bindin post14 of the motor and with the bin mg post 8 of the controller, whereby itwill be understood that the contact point lie the one with which thethermostatic element 2 will contact in order toclose or shut ofi' thedraft.

he operation of these parts just described will be readily apparent.When the thermostatic. element 2 is in the position. seen in thefigures, the end thereof is in contact with the contact point, 4,i'nwhich event, the circuit will be closed to the'batbinding post 15,the conductor 18, to the binding post 19, ofthe controller, and throughthe base plate thereof to the thermostatic element 2, to the contactoint 4, to the binding post 8 and throug the conductor 20 to the bindingpost 14, of the motor, which is actuated, or will be in position. toclose off the drafts. Should,

I the bindin is increased or decreased, that is,

the other of which circuit controlling as follows through the with poleof which battery is 1n suitable conhowever, the temperature fall belowthe debe actuated in order that the end thereof will contact with thecontact point 5 in which event the circuit in the battery will be asfollows :through the binding post 15 of the motor 10, through theconductor 18, through the binding post 19, through the base platethereof to the thermostatic element 2 to'the contact point 5 and throughpost 9 and the conductor 17, to the bin mg post 16 of the motor whichlatter will be actuated in order to open the air admission draft andclose the check draft, as will be evident.

In order to indicate the position of the dampers to show whether theaction of the temperature generator, that is the furnace, whether thedampers are opened or closed, I have mounted, in the present instance,uponthe controller, 1, .an arm 21 provided, in the present instance,with a plate 22 on which I have provided the notations On and Ofl, saidarm 21 in the present instance being pivotally mounted upon thecontroller and being provided with an armature 23 which is movablebetween and adapted to be attracted by one" or the other of theelectro-magnets 24 and 25, suitably mounted in the present instance uponthe controller 1. The electro-magnet 24, in the present instance, issuitably connected with a conductor 26 which is in connection with thecontroller 1 and said electro-magnet 24 is provided with a conductor 27which, engaging the binding post 28, is connected with a binding post 29mounted upon the motor 10. The other electro-magnet 25 is provided witha conductor 30 which is in connection with the controller 1 and isprovided with a conductor 31 which, engaging the bindingpost 32 isconnected with a binding post 33 mounted on the motor 10, it beingunderstood that the motor is provided with two circuit controllingelements, one of which is adapted to be in connection with the bindingpost 29 in one position of the motor and element is adapted to be inconnection with the binding-post 33 in the other position of the motor,it being seen that in the present construction the binding-post 29 isadapted to be in connection with this circuit controlling element, whenthe motor is in posi tion to throw on the drafts; and the binding post33 is inconnection with the circuit controlling element when the motoris in position to turn off the drafts.

43 designates the contact point of the motor switch which is in suitab econnection one pole of the battery 44, the other nection with thebinding post 15. As will be understood, the magnet 25 is in suitablewill actuate connection with the conductor 30 and the conductor 31,which is connected with the binding post 33, so that when the circuitcontrolling element of the motor is move to a position to be inconnection with the binding post 33 and with the contact point 43 of themotor switch, which is in suitable connection with the battery 44 andwhich latter is in suitable connection with the binding post 15, thecircuit will be closed and the magnet 25 will be energized, which thusattracts the armature 23 and moves the arm 21 to place the word E inposition to be visible, it being understood that the operation of themotor is such that, when the thermostatic element 2 contacts with thecontact point 4, the circuit will be closed with respect to the motor insuch a manner as to move the circuit controlling element into positionto be in connection with said binding post 33 and with said contactpoint 43, to set the indicator, after which the circuit controllingelement is moved to a position to contact solely with the contact point43, as seen in its position in Fig. 7 thus opening the circuit, thearmature, however, remaining in the, position seen in Figs. 6 and 7.Should the thermostatic element 2 be moved to contact with the othercontact point 5, the circuit will be closed which the motor 10, to puton the drafts, and which will actuate the motor to cause the circuitcontrolling element to be in connection with the binding post 29 and thecontact point 43 of the motor switch, so that the circuit will be closedthrough the conductor 27, magnet 24 and'conductor 26, and through thebindnig post 19 andv conductor 18 and the binding post of the battery44, thus energizing the magnet 24, to attract the armature 23 to movethe word on carried by the indicator to a position to be visible, afterwhich the controlling element of the motor is moved back to itsposition, as seen in Fig. 7, that is in contact, solely, with thecontact point 43 leaving the circuit open, the armature 23, however,remaining in its attracted position. It will be understood that theconductors and 26 are in suitable connection with the plate of thecontroller 1, and through the binding post 19, binding post 15, with apole of the battery. of the motor.

. and so adjust From this it will be seen that I have provided a visualindicator which is suitably connected in order to be actuated at alltimes solely by the motor, so that it will indicate exactly the positionof the increasing or decreasing means of the temperature generator andso that no false position of the said indicator can occur withoutaproper indication.

' As seeen in Fig. 3, 1 preferably desire to cover the operative partsof the controller with a cap or covering 34 which is provided with asuitable opening 35 through which the notations on the plate 6 arevisible; and l further provide an opening 36 in order that the notationson the indicator will be visible, and it will also be seen that 1provide an opening for the reception of the post 37 for the operation ofthe pointer 7. The thermostatic element 2, in the present instance, iscarried by one arm of the bellcrank lever 38 which is pivotally mountedat 3, the opposite arm 0 said lever being connected with a rod 89, whichis connecte with an eccentric block 40, which is in engagement with aneccentric 41, which is carried by a stud42 supported by the plate of thecontroller 1, said eccentric 41 being in suitable engagement with thepost 37 in order that by operation of the post 37 the eccentric isactuated in order to slightly raise or lower the eccentric block and inorder to slightly raise or lower the rod 39 the posi ion of thethermostatic element 2, in order to provide means for adjusting thetemperature at which it is desired the thermostatic element operate.

, Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is The combination with a heat generator"having dampers, a motor for actuating the said dampers, a thermostathaving electrical connections to said motor for governing the saidmotor, a visual indicator suitably located, and independent electricalconnections from said motor to said indicator, whereby the position ofthe dampers as moved by said motor is indicated at all times.

- BENJAMIN F. TEAL. Witnesses:

WM. CANER WIEDERSEIM, C. D. MoVAY.

